CONF_ENABLE_PULSE_IRQ
CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
!(flags & CONF_ENABLE_PULSE_IRQ))
link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;